scholarly journals Oxidized LDL and other lipids as risk factors for cardiovascular disease in the patients with metabolic syndrome

2005 ◽  
Vol 24 (2) ◽  
pp. 99-106
Author(s):  
Danijela Trifunovic ◽  
Tanja Milicic ◽  
Tatjana Potpara ◽  
Emina Colak

We estimated relationship between lipids, LDL oxidation, antioxidant activity and CRP in diabetic patients with metabolic syndrome (MS), with and without coronary heart disease (CHD), in non diabetic patients with and without CHD and in obese patients, with and without diabetes. We didn't-t find significant difference in lipids among diabetic MS patients. Patients from all subgroups have similar level of oxLDL, but significant higher comparing with healthy control. MS diabetic patients have oxLDL in positive correlation with TC, LDL-C, non HDLC and apo B 100, as vell as with molar ratio LDL-C/HDL-C and TG/HDL-C (p<0.001). Among non diabetics, CHD patients had higher Lp(a), but oxLDL was similar in both subgroups. In the nondiabetics we found correlation between oxLDL, TC, LDL-C and TG (p<0.01) and apo B 100 (p<0.001), but not with TG/HDL-C molar ratio. Obese patients from both groups had similar lipids profile but, oxLDL was higher, not significant, in non diabetics. We didn't-t find significant differences in antioxidative activity and CRP in both diabetics MS subgroups, and both obese subgroups. Nondiabetics with CHD have lower E-SOD and E-GPX activity and higher level of CRP than non CHD patients (p<0.05). MS diabetics and non diabetics didn't have significant correlation between levels of oxLDL and CRP, but CHD patients (with or without diabetes) had (p<0. 01).

Biomolecules ◽  
2022 ◽  
Vol 12 (1) ◽  
pp. 116
Author(s):  
Imre Juhász ◽  
Szilvia Ujfalusi ◽  
Ildikó Seres ◽  
Hajnalka Lőrincz ◽  
Viktória Evelin Varga ◽  
...  

Background: Afamin is a liver-produced bioactive protein and features α- and γ-tocopherol binding sites. Afamin levels are elevated in metabolic syndrome and obesity and correlate well with components of metabolic syndrome. Afamin concentrations, correlations between afamin and vitamin E, afamin and lipoprotein subfractions in non-diabetic, obese patients have not been fully examined. Methods: Fifty non-diabetic, morbidly obese patients and thirty-two healthy, normal-weight individuals were involved in our study. The afamin concentrations were measured by ELISA. Lipoprotein subfractions were determined with gel electrophoresis. Gas chromatography–mass spectrometry was used to measure α- and γ tocopherol levels. Results: Afamin concentrations were significantly higher in the obese patients compared to the healthy control (70.4 ± 12.8 vs. 47.6 ± 8.5 μg/mL, p < 0.001). Positive correlations were found between afamin and fasting glucose, HbA1c, hsCRP, triglyceride, and oxidized LDL level, as well as the amount and ratio of small HDL subfractions. Negative correlations were observed between afamin and mean LDL size, as well as the amount and ratio of large HDL subfractions. After multiple regression analysis, HbA1c levels and small HDL turned out to be independent predictors of afamin. Conclusions: Afamin may be involved in the development of obesity-related oxidative stress via the development of insulin resistance and not by affecting α- and γ-tocopherol levels.


Author(s):  
Leila Akbarbaglu ◽  
Elham Nozari Mirarkolaei ◽  
Massoumeh Hotelchi ◽  
Abbas Khonakdar-Tarsi ◽  
Mahboobeh Ghanbari ◽  
...  

Introduction: Metabolic syndrome includes a range of disorders that increase the risk of cardiovascular disease and diabetes mellitus. In this study, we examined the serum level of vitamin D3 in diabetic individuals with metabolic syndrome compared with non-diabetic individuals without metabolic syndrome and the association of serum vitamin D3 levels with metabolic syndrome and atherogenic factor (LDL/HDL). Material and Methods: In a case-control study, we included 110 women with metabolic syndrome according to ATP III criteria and 127 healthy women as a control group. Serum concentration of total cholesterol, LDL-C, FBS, HDL-C and serum triglyceride determined by enzymatic method and colorimetric and, serum level 25-(OH) vitamin D determined by ELISA. Results: It was found that the two healthy and metabolic groups were significantly different in terms of total cholesterol levels, LDL and triglyceride levels, HDL, VLDL, FBS, atherogenic index (LDL/HDL) and vitamin D levels (p<0.05). All participants in the control group and the patient and the whole study population were divided into two categories of insufficient and sufficient based on their measured serum concentrations of 25-(OH) vitamin D. There was a significant difference between the group with insufficient levels of vitamin D in comparison with the group with sufficient levels of vitamin D in terms of total cholesterol, LDL and triglyceride levels, HDL, VLDL, FBS and atherogenic index (LDL/HDL) (p=0.000). Conclusion: The present results showed that there is a significant relationship between level 25-(OH) D and atherogenic index (LDL/HDL) and the incidence of metabolic syndrome.


2018 ◽  
Vol 33 (2) ◽  
pp. 99-103 ◽  
Author(s):  
Branko Srećković ◽  
Ivan Soldatovic ◽  
Emina Colak ◽  
Igor Mrdovic ◽  
Mirjana Sumarac-Dumanovic ◽  
...  

Abstract Background: Abdominal adiposity has a central role in developing insulin resistance (IR) by releasing pro-inflammatory cytokines. Patients with metabolic syndrome (MS) have higher values of homocysteine. Hyperhomocysteinemia correlates with IR, increasing the oxidative stress. Oxidative stress causes endothelial dysfunction, hypertension and atherosclerosis. The objective of the study was to examine the correlation of homocysteine with siMS score and siMS risk score and with other MS co-founding factors. Methods: The study included 69 obese individuals (age over 30, body mass index [BMI] >25 kg/m2), classified into two groups: I-with MS (33 patients); II-without MS (36 patients). Measurements included: anthropometric parameters, lipids, glucose regulation parameters and inflammation parameters. IR was determined by homeostatic model assessment for insulin resistance (HOMA-IR). ATP III classification was applied for diagnosing MS. SiMS score was used as continuous measure of metabolic syndrome. Results: A significant difference between groups was found for C-reactive protein (CRP) (p<0.01) apolipoprotein (Apo) B, HOMA-IR and acidum uricum (p<0.05). siMS risk score showed a positive correlation with homocysteine (p=0.023), while siMS score correlated positively with fibrinogen (p=0.013), CRP and acidum uricum (p=0.000) and homocysteine (p=0.08). Homocysteine correlated positively with ApoB (p=0.036), HbA1c (p=0.047), HOMA-IR (p=0.008) and negatively with ApoE (p=0.042). Conclusions: Correlation of siMS score with homocysteine, fibrinogen, CRP and acidum uricum indicates that they are co-founding factors of MS. siMS risk score correlation with homocysteine indicates that hyperhomocysteinemia increases with age. Hyperhomocysteinemia is linked with genetic factors and family nutritional scheme, increasing the risk for atherosclerosis.


2012 ◽  
Vol 111 (suppl_1) ◽  
Author(s):  
Toshinori Aoyagi ◽  
Takashi Matsui

The risk of heart failure following myocardial infarction is higher in diabetic patients than nondiabetic patients. The mammalian target of rapamycin (mTOR), a key downstream molecule of insulin-phosphoinositide 3-kinase (PI3K)-Akt signaling pathway, plays an important role in cardioprotection. However, the role of cardiac mTOR in ischemic injury in metabolic syndrome has not been well defined. To address this question, we studied the effect of overexpressing cardiac mTOR on cardiac function following ischemia/reperfusion (I/R) in mice with high-fat diet (HFD)-induced obesity. In this study, we used transgenic mice with cardiac-specific overexpression of mTOR (mTOR-Tg) as reported previously. mTOR-Tg and WT mice at 6 weeks old were fed HFD (60% fat by calories) ad libitum for 14 weeks. Control mTOR-Tg and WT mice were fed a normal chow diet (NCD). At 14 weeks after HFD, glucose and insulin tolerance tests demonstrated that HFD generated glucose intolerance and insulin resistance in both mTOR-Tg (n=20) and WT (n=24) mice. Body weight (BW) and heart weight (HW) were significantly higher in HFD mice than SCD mice (p<0.001 for BW in both strains; p<0.001 and p<0.01 for HW/tibia length, WT and mTOR-Tg, respectively) but there was no difference in BW or HW between HFD-mTOR-Tg and HFD-WT mice. Hearts from all four groups were subjected to global I/R (20 min ischemia, 40 min reperfusion) in the ex vivo Langendorff perfusion model. Baseline left ventricular developed pressure (LVDP) was higher in HFD mice than NCD mice in both strains [185.8 ± 10.7 vs. 143.6 ± 5.0 mmHg, HFD-WT (n=11) vs. NCD-WT (n=10) mice, p<0.01; 178.6 ± 10.1 vs. 135.0 ± 6.3, HFD-mTOR-Tg (n=8) vs. NCD-mTOR-Tg (n=11) mice, p<0.01]. Functional recovery after I/R was significantly lower in HFD-WT mice than NCD-WT mice (percent recovery of LVDP, 15.3 ± 5.4 vs. 44.6 ± 6.3 %, HFD-WT vs. NCD-WT mice, p<0.01). Intriguingly, there was no significant difference in LVDP recovery between HFD-mTOR-Tg and NCD-mTOR-Tg mice (36.5±10.8 vs. 58.8±6.0 %, HFD-mTOR-Tg vs. NCD-mTOR-Tg mice, n.s.). These findings suggest that cardiac mTOR is sufficient to substantially limit the metabolic syndrome-induced cardiac dysfunction following I/R in a mouse model of obesity with glucose intolerance and insulin resistance.


2019 ◽  
Vol 30 (2) ◽  
pp. 391-400 ◽  
Author(s):  
G. Rega-Kaun ◽  
C. Kaun ◽  
G. Jaegersberger ◽  
M. Prager ◽  
M. Hackl ◽  
...  

Abstract Background Obesity is closely linked to increased markers of metabolic syndrome and development of diabetes. Roux-en-Y bariatric surgery reduces hyperinsulinemia and improves insulin sensitivity and hence benefits morbidly obese patients. Aim To determine changes in markers of metabolic syndrome, pancreatic function, and hepatic insulin sensitivity in patients before and 1 year after undergoing Roux-en-Y gastric bypass surgery. Methods We enrolled 43 consecutive patients in a single center. Markers for metabolic syndrome included proinsulin, insulin, C-peptide, liver enzymes, and serum levels of selected microRNAs hsa-miR-122, hsa-miR-130, hsa-miR-132, and hsa-miR-375. Results After surgery, all patients showed a significant 37% drop of body mass index (p < 0.001). Furthermore, proinsulin (59% reduction, p < 0.001), insulin (76% reduction, p < 0.001), and C-peptide (56% reduction, p < 0.001) were all reduced 1 year after surgery. Using the hepatic insulin clearance score, we determined a significant increase in hepatic insulin clearance after surgery (76% increase, p < 0.001). Especially diabetic patients showed a marked 2.1-fold increase after surgery. Hepatic enzymes ALT (35% reduction, p = 0.002) and γGT (48% reduction, p < 0.001) were significantly reduced in all patients with similar improvement in diabetic and non-diabetic patients. miRNAs hsa-miR-122, hsa-miR-130, and hsa-miR-132 were all significantly reduced whereas hsa-miR-375 was increased after gastric bypass surgery (p < 0.001 for all miRNAs). Conclusion Both liver and pancreatic stress parameters were reduced significantly 1 year after Roux-en-Y gastric bypass surgery suggesting an overall amelioration of the metabolic syndrome in all patients regardless of previous health status.


2020 ◽  
Vol 38 (15_suppl) ◽  
pp. 5580-5580
Author(s):  
Shifeng Mao ◽  
Ralph Miller ◽  
John Lyne ◽  
Jeffrey Cohen ◽  
Arash Samiei

5580 Background: Obesity and metabolic syndrome (MS) is prevalent in our society, and have been linked to a higher incidence of prostate cancer (PCa). The relationship of obesity or MS and cancer control has yielded mixed results in previous studies. We examined the correlation between the incidence of biochemical recurrence (BCR) with MS and BMI in a cohort of patients with PCa who underwent robotic-assisted laparoscopic prostatectomy (RALP). Methods: A retrospective study of patients who underwent RALP at a single center from 2007 to 2015 was conducted. Parameters including preoperative BMI, fasting glucose, lipid profile, blood pressure, PSA, Gleason score, pathologic stage, time to BCR, and surgical margin status were analyzed. Patients were categorized in high (HR), intermediate (IR), and low-risk (LR) groups based on the National Comprehensive Cancer Network (NCCN) guidelines. WHO classification was used for MS criteria, and BCR was defined as two consecutive postoperative PSA volume of ≥ 0.2 ng/mL. Obesity is defined as BMI ≥30 kg/m2. Results: A total of 726 patients with 189 in HR, 471 in IR and 66 patients in LR groups were included in this study with the median age of 59 (interquartile range [IQR] 55-64) years old. The median follow-up from surgery was 38 (IQR 22-46) months. More obese patients were found in the HR group compared to IR/LR group (46.5% vs. 33.1%, p<0.01). There were also more patients with MS in the HR group compared to IR/LR group (36.5% vs. 12.0%, p<0.01). Obese patients had a higher rate of BCR across risk groups in comparison to non-obese patients 32.1% vs. 15.4% (P<0.001), specifically 68% vs. 40%(p<0.01) in HR group and 21.3% vs. 12.7% (p=0.035) in the IR group. Similarly, patients with MS had a higher rate of BCR in HR and IR groups in comparison to the patients without MS, 39.1% vs. 18.7% (P<0.01); specifically, 67.7% vs. 42.2% (p<0.01) in HR and 29% vs. 11.6% (p<0.01) in the IR group. No correlation between MS or obesity and BCR was observed in LR group. There was no statistically significant difference in the positive surgical margin rate between obese and non-obese cohorts in each risk group. Conclusions: Among HR and IR-PCa patietns who underwent RALP, both obesity and MS correlate with increased risk of BCR. There were significantly more obesity and MS in HR-PCa patients, suggesting a potential pathophysiologic interplay between obesity or MS and cancer progression.


2012 ◽  
Vol 2012 ◽  
pp. 1-5 ◽  
Author(s):  
Parisa Behzadi ◽  
Firouzeh Torabi ◽  
Massoud Amini ◽  
Ashraf Aminorroaya

Oxidized low density lipoprotein (ox-LDL) is a product of oxidative stress. In this cross-sectional study, we compared the ox-LDL concentrations in diabetic patients with normoalbuminuria (n=28), microalbuminuria (n=28), and macroalbuminuria (n=28) with their first degree relatives (n=28) and healthy control people (n=31). They were selected by consecutive patient selection method. The ox-LDL level was assayed using ELISA. We measured blood pressure, lipid profile, fasting plasma glucose (FPG), and HbA1c in all groups. There was no significant difference in ox-LDL concentrations among normoalbuminuric, microalbuminuric, and macroalbuminuric diabetic groups. In diabetic patients with micro- and macroalbuminuria, ox-LDL concentration was higher than their first degree relatives (P=0.04andP=0.03) and control group (P=0.001andP=0.03, resp.). In normoalbuminuric diabetic persons, ox-LDL concentration was just higher than that of healthy people (P=0.02). There was no statistically significant difference in ox-LDL levels between normoalbuminuric diabetic patients and their first degree relatives. In conclusion, the presence and progression of albuminuria in diabetic patients are not related to ox-LDL concentration and genetic predisposition influences the plasma OX-LDL level. Larger sample size is needed to confirm this conclusion in future studies.


2014 ◽  
pp. 95-101
Author(s):  
L. MÁČOVÁ ◽  
M. BIČÍKOVÁ ◽  
H. ZAMRAZILOVÁ ◽  
M. HILL ◽  
H. KAZIHNITKOVÁ ◽  
...  

Elevated levels of glucocorticoids lead to the development of obesity and metabolic syndrome. Local glucocorticoid levels are regulated through the enzyme 11β-hydroxysteroid dehydrogenase 1 (11β-HSD 1), an enzyme that regenerates active cortisol from inert cortisone. Increased expression of 11β-HSD 1 in adipose tissue promotes higher body mass index (BMI), insulin resistance, hypertension, and dyslipidemia. Human 11β-HSD 1 is also responsible for inter-conversion of 7-hydroxylate metabolites of dehydroepiandrosterone (7-OH-DHEA) to their 7-oxo-form. To better understanding the mechanism of the action, we focused on 7-OH- and 7-oxo-DHEA, and their circulating levels during the reductive treatment in adolescent obese patients. We determined plasma levels of 7α-OH-DHEA, 7β-OH-DHEA, and 7-oxo-DHEA in 55 adolescent patients aged 13.04-15.67 years, BMI greater than 90th percentile. Samples were collected before and after one month of reductive therapy. Circulating levels of 7α-OH-DHEA decreased during the reductive therapy from 1.727 (1.614; 1.854, transformed mean with 95 % confidence interval) to 1.530 nmol/l (1.435; 1.637, p<0.05) in girls and from 1.704 (1.583; 1.842) to 1.540 nmol/l (1.435; 1.659, p<0.05) in boys. With regard to the level of 7-oxo-DHEA, a significant reduction from 1.132 (1.044; 1.231) to 0.918 nmol/l (0.844; 1.000, p<0.05) was found after the treatment, but only in boys. No significant difference in 7β-OH-DHEA levels was observed. In conclusions, diminished levels of 7α-OH-DHEA indicate its possible effect on activity of 11β-HSD 1. Further studies are necessary to clarify whether competitive substrates for 11β-HSD 1 such as 7α-OH-DHEA could inhibit production of glucocorticoids and may be involved in metabolic processes leading to reduction of obesity.


2005 ◽  
Vol 62 (7-8) ◽  
pp. 529-536 ◽  
Author(s):  
Miroslava Zamaklar ◽  
Katarina Lalic ◽  
Natasa Rajkovic ◽  
Danijela Trifunovic ◽  
Mirjana Dragasevic ◽  
...  

Background. Abnormal lipid profile is an important risk factor in the development of macrovascular atherosclerotic complications in patients with type 2 diabetes mellitus (T2D). Factors that contribute to endothelial cell dysfunction associated with the initiation of atherosclerosis include oxidative stress. The aim of this study was to investigate the relationship between lipid profile and oxidative stress in type 2 diabetics with and without ischemic heart disease (IHD). Methods. We studied 80 patients with T2D, 40 with IHD (group A1) and 40 without IHD (group A2). We also studied 51 non-diabetics, 31 with IHD (group B1), and 20 without IHD (group B2 - control group). Lipid profile was estimated by the total cholesterol, HDL cholesterol, LDL cholesterol, the level of triglyceride (Tg), lipoproteina a (Lp a), Apo A I, A II, B 100 and E. To evaluate the oxidative status we measured circulating oxidized LDL (ox LDL), erythrocyte antioxidative enzyme activity: superoxide dismutase (E-SOD), glutathione peroxidase (E-GPX), as well as the total antioxidative serum activity (TAS). Inflammatory reaction was estimated by C-reactive protein (CRP) and fibrinogen. Results. No significant difference was found in the lipid profile in groups A1, A2 and B1, but the group B2 had the lowest one. Lp a level was significantly higher in group B1 comparing to other groups (p < 0.05). There was no significant difference in the level of ox LDL between the groups. In diabetics, ox LDL positively correlated with the total cholesterol, LDL cholesterol, non HDL cholesterol, Apo B 100 and the relations between LDL/HDL and Tg/HDL (p < 0.001), as well as with Tg and fibrinogen (p < 0.05). In group B1, ox LDL positively correlated with total cholesterol, Tg (p < 0.01), LDL, and non HDL cholesterol (p < 0.05) and significantly with Apo B 100 (p < 0.001). There was no significant difference in the antioxidant enzyme activities between the groups of diabetics (A1 and A2), but fibrinogen was higher in the group with IHD (group A1, p < 0.05). Group B1 had lower ESOD activity than the groups A1 and A2 (p < 0.05), but CRP was higher (p < 0.05). There were no significant correlations between oxLDL and CRP in groups A1 and A2, but it was statistically significant in the group B1 (p < 0.05). Conclusion. In this study we demonstrated the increased oxidative stress in diabetics compared to non-diabetics regardless of the presence of IHD. Fibrinogen, but not CRP, was higher in diabetics with IHD, compared to diabetics without IHD. The increased oxidative stress, the reduced antioxidative activity E-SOD, and the higher level of CRP were found in non-diabetics with IHD compared to non-diabetics without IHD.


Author(s):  
Savas Karatas ◽  
Aysun Işıklar

Poor sleep quality is a prevalent health problem among patients with diabetes. Metabolic syndrome (MetS) is common in type 2 diabetic patients and associated with morbidity and mortality. We aimed to investigate sleep quality among type 2 diabetes patients according to their metabolic syndrome status. This was an analysis of data collected from 189 adult type 2 diabetic patients. The patients divided into two groups (metabolic and non-metabolic) based on the presence of MetS. Anthropometric measurements, blood pressure, and serum glucose, lipid levels were collected. The Pittsburgh Sleep Quality Index (PSQI) calculated for all patients. There was no significant difference in subjective sleep quality scores between the two groups (p > 0.05). However, there was a significant difference in sleep latency scores between the two groups; the scores of patients with MetS were lower than those of patients without MetS (p = 0.010, p < 0.05).Sleep quality was low in 57.1% (n = 108) of patients with diabetes. Poor sleep is common among diabetic patients, but in this study, metabolic syndrome existence not associated with sleep quality in type 2 diabetic patients.


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